Sandslinger machine



Dec. 8, 1925. 1.564.258

A. LOUGHRAN SNDSLINGEB. I IACHINE v Filed Sept. l, 1923 2 Sheets-Sheet 1 2 Sheets5heet 2 A. LOUGHRAN SANDSLINGEB. MACHINE Filed Sept. 1, 1923 nventoz I Hof/new Z v I Patented Dec. 8, 1925.

PATENT OFFICE.

ALEXIUS LOUGHRAN, OF BROOKLYN, NEW YORK.

SANDSLINGER MACHINE.

Application nled September To all whom/t may concern.'

Be it known that I, ALExrUs LOUGHRAN, a citizen of the United States, a resident of Brooklyn, in the county of Kings and State of New York, have invented a certain new and useful Improvement in Sandslinger Machines, of which the following is a specilication. l

This invention relates to an improvement in sandslinger machines and it relates more particularly to a machine wherein the sandslinger is stationary while the mechanism for supplying sand thereto is movablewith respect to the sand pile.

In machines of this type wherein sand is thrown at very high velocity into a mold, it has been the practice to provide a very large quantity of sand and to feed this sand by suitable means to the so-called sandslinger which is positioned above the molds so as to eject the sand therein at high velocity. Some of these machines have been stationary in which case the sand had to be fed thereto by suitable conveying mechanism, and some of the machines have been of a movable tractor type in which the entire mechanism was transported or moved with respect to a long sand pile from which the moving tractor elevated the sand to the soecalled sandslinger.

The present invention relates in part to the latter type as it makes use of a movable tractor operating upon suitable tracks alongside of a sand pile, this tractor being adapted to convey the sand from the sand pile in substantially the same manner as in the previous machines; but because of the stationary position of the sandslinger, mechanism has been devised to convey the sand delivered by the movable tractor over` to the sandslinger. The mechanism for thus conveying the sand and handling it to and from the sand pile, together with the mechanism for the other molding operations, formy the particular subject of the present invention as will more fully appear hereinafter from the following description of a preferred embodiment of the invention, which is given for the purpose of illustrating the same.

Fig. l of the drawings shows a plan of the apparatus and the sand pile with the sandslinger Apermanently stationed at one end of the sand pile, and the conveying 1, 1923. Serial NO. 660,468.

mechanism installed in relation to said sandslinger and the sand pile; and

Fig. 2 shows a side view of the apparatus and sand pile.

In said preferred embodiment of the invention there is shown a long sand pile 1 of the usual shape, lying between tracks or racks 2 and 3 upon which the movable tractor is adapted to travel. The latter is shown at 4C and is composed essentially, as far as the present embodiment is concerned, of spiral conveyors 5 and 6 serving to move the sand inwardly from the tracks, and to an yelevator 7 serving to elevate the sand from the pile; gear wheels or cog wheels such as S support the movable tractor and travel upon the said tracks. This part of the structure is well-known and need not be further described.

The sand is dumped from the top of the tractor on to a short belt 9 suitably supported by framework 10 upon the tractor, this belt 9 serving to convey the sand on to a belt Il which may be of the type known as a movable endless belt conveyor. The latter conveys the sand to the sandslinger 12 positioned as shown. Here the sand is screened in the usual way by a screen 13 and conveyed therefrom by means of a belt 14 to the sandslinger proper 15 which rotates at a very high velocity and throws the sand violently into the molds 16 which are conveniently positioned around the sandslinger, the latter being movable with respect to the molds. The particular structure of the stationary sandslinger is well-known in the art and does not form part of this invention.

IVhen the'molds have been filled they are placed upon suitable cars such as 17 adapted to be moved along tracks 18, and these cars are provided with turntables 19 so that they may be turned around to facilitate loading and unloading and also to facilitate the sandslinging and casting operations.

The cars with the molds are moved down to the end of the track 18 and on to a car 2O having thereon tracks 21 upon which the carl? is adapted to be moved. This car 9.0 is then brought in juxtaposition to a ladle 22 traveling upon a car 23 on tracks 24, the ladle receiving melted metal from the cupola 25. The casting operation at this point proceeds in the usual manner and 'oil `from the thereafter the car Q0 is moved along the tracks 26 down to the position 27, at which point the cai' l? is rolled oit the cai" 20 on to tracks QS and thence to a point about inidivay between the ends of the track.

t this point the cope is lifted from the car and the sand dumped into the pit 29 through a grating 30 While the drag is emptied on to a grating 3l vibrated by an eccentric the sand Missing through the grating into the pit while the castings tall in liront ot an. elevator 323 which elevates 'them to a runway 34tdoivn which they travel to a point ot delivery 35. This particular 'forni ot mechanism 33 and Bil is designed 'for use in handling sash ii'eiglits and will oi'icourse be varied according to the kind of castings made, and may be dispensed with altogether. The sand collected in the pit '39 is elevated by an elevator 3G and di npcd on to a moving belt 5l? t'iom which it is in turn dun'iped on to a belt 3S Which dumps it back on to the ground to re-'torm the sand pile. The said belt. 38 may be shuttled back and toi-th according to Whether it is desired to dump the sand on to the pile, the object beinp; to re-Ltoi'iii the pile back of the tractor as it moves forward, so that at the end ot the run the sand pile Will have been ie-tormed and ready tor the ensuing` operation when the tractor is moved thru the pile in the opposite direction as, for example, on the next day"s run. AThe belt 38 may be op fated irom an electric motor with suitable connections to reverse the rotation of the belt when the rotation is'to be changed at the time the sand pile is hali formed. The cars lQalter the molds are again placed thereon, are run to the end ot the track 2S and thence on to a ear 39 running' on a tiaok 4l() by Which means they are conveyed back to the track 18 inv position adjacent the sandslinger ready for the resumption ot' the same operation.

rihe operation ot now be clear from the entire machine will the description thereof ano may be briefly stated to'be as follotvsr rThe movable tractor is placed at one end 'of the sand pile and set in motion to convey sand to the belt 9 from which sand is delivered to the belt ll and thence to the stationary saiidsliiiger. Here the vmolds are filled in the usual manner and are then placed upon the cars 1T and conveyed to the ladle mechanism Where the casting is performed. The cars 17, riding upon the car 20, are then moved over to the track 28 and run along this track until they arrive adjacent' the dumping,- apparatus. IHere the sand is diniiped outfiand thecastings are removed molds. The latter are again placed upon the car and conveyed back to the track-18 ready for another operation. fl/'hen the tractor'arrives atv the end of the sand pile .it must be turned around and this rit is yto be un'derstoodthatl do not intend may be donc by any suit-able means such as a hydraulic lifting jack; the tractor can, however, beinade rotatable solas to avoid turning it around.

It Will be seen that by means ot' the invention above described the handling ot the molds has been made quite simple inasmuch as they need not be carried but a short distance from the tracks by the workmen; and they are aluf'ayspositioned at one point in the system from Which they are conveye-il by cars and toiivhich they vare brought Vback by the saine means. It YWill be `furthermore apparent thatvthe handling' ot the-sand has beenfiiiade quitefsimplein that it always remains on the `ground n'lien not being actually put iii-usc, thus dispensing,- Wi'tlrthe necessity loi` erectingexpensive storing bins. The sand pile is re-iiormed as fast as it is usc-dup so that when the-tractor arrives at the end ot the sa-ndpile, as for example at the end ot a -dayis run, the pile Will be there ready tor the next daysi'un, and the means etici-ting this consists simply in a series et beits which convey the sand from the dumping apparatus back to the sand'pile, a simple `shuttle belt beingl used to follow the tractor and dump the sand behind it. It Will tui'- thermore be. apparent that an additional adf'antage consists in bringing,` the cars containingl the .molds :adjacent the ladle. It

should. also beV pointed'out thatvthe present invention economizesspace and does not involve great expense.

As in anyV apparently Widely different embodiments ot "my invention may be made Withoutdeparting from the spirit thereot,

tol-imit myself' tothe embodiments described .exceptt as delined in the followingl claims.

vvslinger torthe sandy pile.

2. The combination ot a stationary sandvslingerviith means lfor. conveying sand from a sand pile to'said'sandslinger; means tor reforming the pile as itis consumed; and conveying V`means 'for the molds from the sandslingerito a ladle, and thence to a dumping place, and back again adjacent the sandslinger.

3. :The combination ot a stationary sandslinger With-means for conveying sand from a sandfpile to saidsandslinger; means for 1re-forming the pile .as itis consumed; and cars running on tracks laid around the sand `pile for conveying` themolds `from the' sandslinger to the ladle, and thence to a dumplit) - slinger ing place, and back again adjacent the sandslinger.

4. The combination of a stationary sandslinger with means for conveying sand from a sand pile to said sandslinger; means for conveying the molds from the sandslinger to a ladle, thence to a dumping place, and back again adjacent the sandslinger; and means for conveying the sand from the dumping place back to the sand pile to replace the sand consumed.

5. The combination of a stationary sandslinger with means for conveying sand from a sand pile to said sandslinger; means for conveying the molds from the sandslinger to a ladle, thence to a dumping place, and back again adjacent the sandslinger; and means for conveying the sand from the dumping place back to the sand pile to replace the sand consumed, said means comprising a transverse and longitudinal shuttle belt.

6. The combination of a stationary sandivith means for conveying sand from a sand pile to said sandslinger; means for conveying the n10-lds Jfrom the sandsliuger to a ladle, and thence to a dumping place, and back again adjacentthe sandslinger; said dumping place being provided with. a sand pit, an elevator` for removing the sand therefrom, and belts for conveying the sand back to the sand pile.

7. The combination for use in connection with a sand pile, of a sand-elevating means; a dumping place for the sand after having been used; and a shuttle belt above the sand pile having means for delivering the sand thereto so that the sand may be dumped back on to the ground to re-'form the sand pile.

8. The combination for use in connection with a sand pile, of a dumping pit; an elevator therein delivering sand to a transverse conveying means; and a longitudinally positioned shuttle belt for dumping the sand back on to the ground to re-form the sand pile.

9. The combination for use in connec tion with a sand pile, of tracks laid around the same and cars adapted to run on the tracks; a ladle positioned adjacent the tracks; a sand dumping place positioned beside the tracks somewhat remote from said ladle; and means lor conveying the sand from the dumping place back to the sand pile so as to re-form the same.

l0. The combination for use in connection with a sand pile, of tracks laid around the sand and cars adapted to run on the tracks; a ladle positioned adjacent the tracks; a sand dumping place positioned beside thel tracks somewhat remote from said ladle; means for conveying the sand from the dumping place back to the sand pile so as to re-form the same; and a stationary sandslinger positioned adjacent another point along said tracks.

In testimony that I claim the foregoing, I have hereunto set my hand this 14th day of August, 1923.

ALEXIUS LOUGHRAN. 

